Craftsman
Water Pump

Model # 3902505 Official Craftsman jet pump

Here are the diagrams and repair parts for Official Craftsman 3902505 jet pump, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 24 parts  |

Pump Shaft Seal 17351-0009
#2

Motor/venturi/pump body diagram

Pump shaft seal

Part #17351-0009

This item is not returnable
$8.89
10% OFF Phone Price : $9.89
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Pump Shaft Seal U109-6A
#5

Motor/venturi/pump body diagram

Pump shaft seal

Part #U109-6A

Replaced by #U109-6B

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Manufacturer substitution
This part replaces U109-6A. Substitute parts can look different from the original.
$106.69
10% OFF Phone Price : $118.69
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Switch Tube U37-672P
#17

Motor/venturi/pump body diagram

Switch tube

Part #U37-672P

Replaced by #U37-673P

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Manufacturer substitution
This part replaces U37-672P. Substitute parts can look different from the original.
This item is not returnable
$19.98
9% OFF Phone Price : $21.98
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Pump Nozzle N34P-17
#10

Motor/venturi/pump body diagram

Pump nozzle

Part #N34P-17

In Stock
Pump Check Valve N212-12P
#13

Motor/venturi/pump body diagram

Pump check valve

Part #N212-12P

$118.69
9% OFF Phone Price : $130.69
In Stock
Complete Fitting U111-86T
#38

Volume control package diagram

Complete fitting

Part #U111-86T

Replaced by #U111-212T

?
Manufacturer substitution
This part replaces U111-86T. Substitute parts can look different from the original.
This item is not returnable
$27.69
18% OFF Phone Price : $33.69
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Pump Diffuser L1-25P
#7

Motor/venturi/pump body diagram

Pump diffuser

Part #L1-25P

This item is not returnable
In Stock
Pump Venturi N32P-66
#9

Motor/venturi/pump body diagram

Pump venturi

Part #N32P-66

In Stock
Pump Impeller J105-40P
#6

Motor/venturi/pump body diagram

Pump impeller

Part #J105-40P

$149.07
7% OFF Phone Price : $161.07
In Stock
Reducer U78-774P
#35

Volume control package diagram

Reducer

Part #U78-774P

In Stock

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Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

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How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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Time required
 15 minutes or less
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How to replace a lawn mower wheel

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Articles and videos for gas walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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Lawn mower won't start troubleshooting video: can't pull recoil pull cord

A blade obstruction, bad recoil starter or locked-up engine can prevent the pull cord on your mower from working. See ho…